SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 JJ24

2016 JJ24

2016 JJ24 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.311 AU it takes 1.50 yr to circle the Sun.

Apollo Observations: 50
Orbital Period · P
1.50 yr
v(q)
70.1 km/s
v(Q)
9.6 km/s
Diameter · ≈
0.32 km
TJ
4.61
Eccentricity · e
0.7581

Orbit and dynamics

The path is an ellipse reaching 0.317 AU from the Sun at perihelion and 2.305 AU at aphelion, a radial span of 1.988 AU.

Applying Kepler's third law to a = 1.311 AU gives an orbital period of 1.50 yr, or about 548 days.

The high eccentricity (0.758) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 10.86° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 70.1 km/s at perihelion and falls to 9.6 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 20.24 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.32 km.

Observation record and orbit quality

The current orbit solution is based on 50 observations and has a weighted RMS residual of 0.7648 arcseconds.

Condition code U = 2 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
1.311 AU
Eccentricity
0.7581
Perihelion
0.317 AU
Aphelion
2.304869 AU
Inclination
10.86°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
19.02°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
20.24

Orbit Quality

RMS
0.76481
Condition
2
Orbit ID
—
Data source: NASA JPL Small-Body Database . Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

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